This is the Colt Python. A dream gun for many. Each one was handmade at Colt. It shoots .357 Magnum and .38 Special. Trigger pull is as good as it gets in a revolver. It is manageable even with full power .357 hot loads. I had to sell it a few years ago when times were tougher, and I wish I never did. I want it back in my collection, but now they sell for $1800 in the condition shown.